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BOSTON MARATHON 2023

Isabel Klein

Bib: 16902•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Division (F18-39)
#0 / 4884
Top 43%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:01
Rank: #8897
Start → 5K
23:01 | 7:25/mi
10K· 6.21 mi
46:27
Rank: #9803 (-906)
5K → 10K
23:26 | 7:33/mi
15K· 9.32 mi
1:10:05
Rank: #10238 (-435)
10K → 15K
23:38 | 7:36/mi
20K· 12.43 mi
1:34:18
Rank: #10607 (-369)
15K → 20K
24:13 | 7:48/mi
Half· 13.11 mi
1:39:33
Rank: #10683 (-76)
20K → Half
5:15 | 7:42/mi
25K· 15.53 mi
1:59:02
Rank: #11011 (-328)
Half → 25K
19:29 | 8:02/mi
30K· 18.64 mi
2:24:34
Rank: #11213 (-202)
25K → 30K
25:32 | 8:13/mi
20M
2:36:04
Rank: #11390 (-177)
30K → 20M
11:30 | 8:28/mi
21M
2:45:09
Rank: #11557 (-167)
20M → 21M
9:05 | 9:05/mi
35K· 21.75 mi
2:51:07
Rank: #11567 (-10)
21M → 35K
5:58 | 7:59/mi
23M
3:01:43
Rank: #11649 (-82)
35K → 23M
10:36 | 8:28/mi
24M
3:10:17
Rank: #11820 (-171)
23M → 24M
8:34 | 8:34/mi
40K· 24.85 mi
3:17:22
Rank: #11808 (+12)
24M → 40K
7:05 | 8:17/mi
25.2M
3:20:19
Rank: #11768 (+40)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:28:22
Rank: #11746 (+22)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:33
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:48:49
Pace8:18 /mi
📊Positive Split: 9.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0923:017:2523:01
7:25
-
10K
6.21 mi11:36:3546:277:2923:26
7:33
+0:08
15K
9.32 mi12:00:131:10:057:3123:38
7:36
+0:03
20K
12.43 mi12:24:261:34:187:3524:13
7:48
+0:12
Half
13.11 mi12:29:411:39:337:365:15
7:42
-0:06
25K
15.53 mi12:49:101:59:027:4019:29
8:02
+0:20
30K
18.64 mi13:14:422:24:347:4525:32
8:13
+0:11
20M
20.00 mi13:26:122:36:047:4811:30
8:28
+0:15
21M
21.00 mi13:35:172:45:097:529:05
9:05
+0:37
35K
21.75 mi13:41:152:51:077:525:58
7:59
-1:06
23M
23.00 mi13:51:513:01:437:5410:36
8:28
+0:29
24M
24.00 mi14:00:253:10:177:568:34
8:34
+0:06
40K
24.85 mi14:07:303:17:227:567:05
8:17
-0:17
25.2M
25.20 mi14:10:273:20:197:572:57
8:33
+0:16
Finish
26.22 mi14:18:303:28:227:578:03
7:54
-0:39

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:25 /mi

Average Pace

7:57 /mi

Slowest Pace

9:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:33

48% of race

Time at Steady Pace

59:02

28% of race

Time at Slower Pace

49:47

24% of race

Average Pace: 7:57 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:13:0923:017:2523:01
7:25
#8897
10K
6.21 mi11:36:3546:277:2923:26
7:33
#9803
15K
9.32 mi12:00:131:10:057:3123:38
7:36
#10238
20K
12.43 mi12:24:261:34:187:3524:13
7:48
#10607
Half
13.11 mi12:29:411:39:337:365:15
7:42
#10683
25K
15.53 mi12:49:101:59:027:4019:29
8:02
#11011
30K
18.64 mi13:14:422:24:347:4525:32
8:13
#11213
20M
20.00 mi13:26:122:36:047:4811:30
8:28
#11390
21M
21.00 mi13:35:172:45:097:529:05
9:05
#11557
35K
21.75 mi13:41:152:51:077:525:58
7:59
#11567
23M
23.00 mi13:51:513:01:437:5410:36
8:28
#11649
24M
24.00 mi14:00:253:10:177:568:34
8:34
#11820
40K
24.85 mi14:07:303:17:227:567:05
8:17
#11808
25.2M
25.20 mi14:10:273:20:197:572:57
8:33
#11768
Finish
26.22 mi14:18:303:28:227:578:03
7:54
#11746
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi88971360136011098(Top 42%)2409(Top 21%)2409(Top 49%)
10K6.21 mi3.10 mi9803-9061746-3861746-38610835(Top 41%)2225(Top 19%)2225(Top 46%)
15K9.32 mi3.11 mi10238-4351932-1861932-18611098(Top 42%)2409(Top 21%)2409(Top 49%)
20K12.43 mi3.11 mi10607-3692131-1992131-19911710(Top 44%)2800(Top 25%)2800(Top 57%)
Half13.11 mi0.68 mi10683-762175-442175-4411912(Top 45%)2864(Top 25%)2864(Top 59%)
25K15.53 mi2.42 mi11011-3282364-1892364-18913033(Top 49%)3640(Top 32%)3640(Top 75%)
30K18.64 mi3.11 mi11213-2022540-1762540-17612468(Top 47%)3443(Top 30%)3443(Top 70%)
20M20.00 mi1.36 mi11390-1772650-1102650-11013416(Top 50%)4076(Top 36%)4076(Top 83%)
21M21.00 mi1.00 mi11557-1672765-1152765-11513891(Top 52%)4424(Top 39%)4424(Top 91%)
35K21.75 mi0.75 mi11567-102785-202785-2011963(Top 45%)3399(Top 30%)3399(Top 70%)
23M23.00 mi1.25 mi11649-822848-632848-6312998(Top 49%)4061(Top 36%)4061(Top 83%)
24M24.00 mi1.00 mi11820-1712964-1162964-11614866(Top 56%)5143(Top 45%)5143(Top 105%)
40K24.85 mi0.85 mi11808+122984-202984-2011936(Top 45%)3626(Top 32%)3626(Top 74%)
25.2M25.20 mi0.35 mi11768+402973+112973+119955(Top 37%)2671(Top 23%)2671(Top 55%)
Finish26.22 mi1.02 mi11746+222981-82981-811412(Top 43%)3400(Top 30%)3400(Top 70%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11098

Females

2409

F18-39

2409

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10835

Females

2225

F18-39

2225

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11098

Females

2409

F18-39

2409

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11710

Females

2800

F18-39

2800

20K→Half

12.4 - 13.1 mi

Top 45%
×2stories
+19ft-37ft

Overall

11912

Females

2864

F18-39

2864

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13033

Females

3640

F18-39

3640

25K→30K

15.5 - 18.6 mi

Top 47%
×9stories
+181ft-148ft

Overall

12468

Females

3443

F18-39

3443

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

13416

Females

4076

F18-39

4076

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

13891

Females

4424

F18-39

4424

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

11963

Females

3399

F18-39

3399

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

12998

Females

4061

F18-39

4061

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

14866

Females

5143

F18-39

5143

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11936

Females

3626

F18-39

3626

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9955

Females

2671

F18-39

2671

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

11412

Females

3400

F18-39

3400

Passing Analysis

Category:
Athletes Passed
826
Passed By
3673
Net Change
-2849
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8897
5K → 10K64970-906#8897#9803
10K → 15K62495-435#9803#10238
15K → 20K63432-369#10238#10607
20K → Half1187-76#10607#10683
Half → 25K60388-328#10683#11011
25K → 30K122324-202#11011#11213
30K → 20M38215-177#11213#11390
20M → 21M46213-167#11390#11557
21M → 35K5060-10#11557#11567
35K → 23M71153-82#11567#11649
23M → 24M30201-171#11649#11820
24M → 40K7159+12#11820#11808
40K → 25.2M499+40#11808#11768
25.2M → Finish8967+22#11768#11746
TOTALS8263673-2849
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing